This Twitpic from a one-post Twitter feed purported to be for Dead Space may be a teaser for Dead Space 2, according to a post on Joystiq, where they outline attempts to decipher the Twitpic's meaning. The image is a Rorschach-style inkblot, so the Dead Space 2 interpretation could just reflect the subconscious desires of the viewers (all I see is a personal love note to me from Scarlett Johansson), but they make the case for how this is for a sequel to EA's horror-themed shooter.

guessing because they did the butterfly effect / mirror kind of thing that dead space 2 will be 2 player co-op

_________________________________________________"Money doesn't exist in the 24th century, the acquisition of wealth is no longer the driving force in our lives. We work to better ourselves and the rest of humanity." - Jean-Luc Picard